With knowing humour and a sharp script, Attal brings us into his world wonderfully, never letting the film get out of control with inside jokes or oblique references. It's basically a series of superbly timed joke sequences, setting us up for the punchline and then moving right along. As performed by the very talented cast, the characters are very likeable, even though all of them make serious mistakes along the way. Gainsbourg is especially good in a role that's both brighter and much more energetic than we usually see her in. And a sideplot about Yvan's sister and brother-in-law (Lvovsky and Bateau) adds texture and warmth along the way. The film isn't afraid to tackle issues like jealousy and betrayal with a certain degree of seriousness, even though we're pretty sure things will all work out in the end. And amid the comedy it actually examines the nature of acting--how performers must fall in love just a little if they are to convince the audience. All of this combines to make the film bracingly natural and real--charming, sometimes provocative and frequently laugh-out-loud funny.